1: /*
  2:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  3:    SLEPc - Scalable Library for Eigenvalue Problem Computations
  4:    Copyright (c) 2002-, Universitat Politecnica de Valencia, Spain

  6:    This file is part of SLEPc.
  7:    SLEPc is distributed under a 2-clause BSD license (see LICENSE).
  8:    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  9: */

 11: static char help[] = "Test EPS with different builds with a matrix loaded from a file.\n\n"
 12:   "This test is based on ex4.c in tutorials.\n"
 13:   "It loads test matrices available in PETSc's distribution.\n"
 14:   "Add -symm or -herm to select the symmetric/Hermitian matrix.\n\n";

 16: #include <slepceps.h>

 18: int main(int argc,char **argv)
 19: {
 20:   Mat            A;               /* operator matrix */
 21:   EPS            eps;             /* eigenproblem solver context */
 22:   char           filename[PETSC_MAX_PATH_LEN],path[PETSC_MAX_PATH_LEN];
 23:   const char     *prefix,*scalar,*ints,*floats;
 24:   PetscReal      tol=PETSC_SMALL;
 25:   PetscViewer    viewer;
 26:   PetscBool      flg,symm;

 28:   PetscFunctionBeginUser;
 29:   PetscCall(SlepcInitialize(&argc,&argv,NULL,help));

 31:   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 32:         Load the operator matrix that defines the eigensystem, Ax=kx
 33:      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
 34:   PetscCall(PetscOptionsHasName(NULL,NULL,"-symm",&symm));
 35:   PetscCall(PetscOptionsHasName(NULL,NULL,"-herm",&flg));
 36:   if (flg) symm=PETSC_TRUE;
 37: #if defined(PETSC_USE_COMPLEX)
 38:   prefix = symm? "hpd": "nh";
 39:   scalar = "complex";
 40: #else
 41:   prefix = symm? "spd": "ns";
 42:   scalar = "real";
 43: #endif
 44: #if defined(PETSC_USE_64BIT_INDICES)
 45:   ints   = "int64";
 46: #else
 47:   ints   = "int32";
 48: #endif
 49: #if defined(PETSC_USE_REAL_DOUBLE)
 50:   floats = "float64";
 51: #elif defined(PETSC_USE_REAL_SINGLE)
 52:   floats = "float32";
 53: #endif

 55:   PetscCall(PetscOptionsGetString(NULL,NULL,"-path",path,sizeof(path),&flg));
 56:   if (flg) PetscCall(PetscSNPrintf(filename,sizeof(filename),"%s/%s-%s-%s-%s",path,prefix,scalar,ints,floats));
 57:   else PetscCall(PetscSNPrintf(filename,sizeof(filename),"%s/share/petsc/datafiles/matrices/%s-%s-%s-%s",PETSC_DIR,prefix,scalar,ints,floats));
 58:   PetscCall(PetscPrintf(PETSC_COMM_WORLD,"\nReading matrix from binary file...\n\n"));
 59:   PetscCall(PetscViewerBinaryOpen(PETSC_COMM_WORLD,filename,FILE_MODE_READ,&viewer));
 60:   PetscCall(MatCreate(PETSC_COMM_WORLD,&A));
 61:   PetscCall(MatSetFromOptions(A));
 62:   PetscCall(MatLoad(A,viewer));
 63:   PetscCall(PetscViewerDestroy(&viewer));

 65:   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 66:                      Create the eigensolver
 67:      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
 68:   PetscCall(EPSCreate(PETSC_COMM_WORLD,&eps));
 69:   PetscCall(EPSSetOperators(eps,A,NULL));
 70:   if (symm) PetscCall(EPSSetProblemType(eps,EPS_HEP));
 71:   else PetscCall(EPSSetProblemType(eps,EPS_NHEP));
 72:   PetscCall(EPSSetTolerances(eps,tol,PETSC_CURRENT));
 73:   PetscCall(EPSSetFromOptions(eps));

 75:   /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 76:                 Solve the eigensystem and display solution
 77:      - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
 78:   PetscCall(EPSSolve(eps));
 79:   PetscCall(EPSErrorView(eps,EPS_ERROR_RELATIVE,NULL));
 80:   PetscCall(EPSDestroy(&eps));
 81:   PetscCall(MatDestroy(&A));
 82:   PetscCall(SlepcFinalize());
 83:   return 0;
 84: }

 86: /*TEST

 88:    build:
 89:       requires: !__float128

 91:    testset:
 92:       args: -eps_nev 3 -path ${DATAFILESPATH}/matrices/petsc-small
 93:       requires: !complex datafilespath
 94:       filter: sed -e "s/92073/92072/" | sed -e "s/80649/80648/" | sed -e "s/80647/80648/" | sed -e "s/45755/45756/"
 95:       output_file: output/test5_1.out
 96:       test:
 97:          suffix: 1
 98:          args: -eps_type {{krylovschur subspace arnoldi gd}}
 99:       test:
100:          suffix: 1_power
101:          args: -eps_type power -st_type sinvert -eps_target 7
102:       test:
103:          suffix: 1_jd
104:          args: -eps_type jd -eps_jd_minv 3 -eps_jd_plusk 1
105:       test:
106:          suffix: 1_gd
107:          args: -eps_type gd -eps_gd_minv 3 -eps_gd_plusk 1
108:       test:
109:          suffix: 1_gd2
110:          args: -eps_type gd -eps_gd_double_expansion

112:    testset:
113:       args: -eps_nev 3 -path ${DATAFILESPATH}/matrices/petsc-small
114:       requires: double complex datafilespath
115:       output_file: output/test5_1_complex.out
116:       test:
117:          suffix: 1_complex
118:          args: -eps_type {{krylovschur subspace arnoldi gd}}
119:       test:
120:          suffix: 1_power_complex
121:          args: -eps_type power -st_type sinvert -eps_target 7
122:       test:
123:          suffix: 1_jd_complex
124:          args: -eps_type jd -eps_jd_minv 3 -eps_jd_plusk 1 -eps_max_it 2000
125:       test:
126:          suffix: 1_gd_complex
127:          args: -eps_type gd -eps_gd_minv 3 -eps_gd_plusk 1
128:       test:
129:          suffix: 1_gd2_complex
130:          args: -eps_type gd -eps_gd_double_expansion

132:    testset:
133:       args: -symm -eps_nev 4 -eps_smallest_real -path ${DATAFILESPATH}/matrices/petsc-small
134:       requires: double !complex datafilespath
135:       output_file: output/test5_2.out
136:       test:
137:         suffix: 2_arpack
138:         args: -eps_type arpack
139:         requires: arpack
140:       test:
141:         suffix: 2_blopex
142:         args: -eps_type blopex
143:         requires: blopex

145:    testset:
146:       args: -symm -eps_nev 4 -eps_smallest_real -path ${DATAFILESPATH}/matrices/petsc-small
147:       requires: double complex datafilespath
148:       output_file: output/test5_2_complex.out
149:       test:
150:         suffix: 2_blopex_complex
151:         args: -eps_type blopex
152:         requires: blopex

154: TEST*/